Exterior shell of a vehicle hood



FIG. 1 is a left, front perspective view of an exterior shell of a vehicle hood showing our new design, it being understood that the broken lines are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left side elevation view thereof, the right side being a mirror image of that shown; and

FIG. 4 is a top plan view therof. 

The ornamental design for an exterior shell of a vehicle hood, as shown and described. 